handle wells completed with drytrees or be connected to subsea installations ..... the most popular designs for dry - tree deepwater floating production ..... tower, which is the other dry - tree option, is thought to be economical ..... Subsea completions Although drytree operations are possible from

split facility with an FPSO near one or more deep-draft, dry - tree units (DTUs) in 2,000 m of water. Alan G. Clarke of Texaco ..... with a single or multiple column system. The DTU will support drytrees and either a workover or drilling rig. In drilling operations

are unable to perform. Even if the host facility has drytrees for the initial suite of production wells, additional subsea ..... More conventional techniques are used for abandoning dry - tree type completions, but tubing retrieval and abandonment

will be produced from wells completed from a DDCV that will support about 34 producing wells completed with drytrees . The dry - tree completions eliminate the need for insulated flowlines that would be required for subsea completed wells. From

concrete. TLPs and spars have the advantage of being designed as dry - tree units or terminals for subsea wellheads and manifolds. Semi ..... manifolds, although future designs may allow them to handle drytrees . These floating supporting structures come in various sizes

a hybrid architecture that includes a dry - tree floating structure, such as a tension ..... FPSO) vessel. In this design, the dry - tree unit provides the drilling functions while ..... hand, if the well pattern is compact, a dry - tree option, such as a TLP, provides better

to install the production risers for the Devil's Tower dry - tree truss spar in the Gulf of Mexico. Work on the risers for the ..... is scheduled for first quarter 2004. Dominion plans eight dry - tree spar wells, which are tied back from the sea floor with the

in future development of 25-year-old Oseberg oil field offshore Norway. The concept is for a standardized, unstaffed, dry - tree platform focusing on minimization of facilities, equipment, and costs. The platforms would be installed in water as deep

acquired at any time. DAS technology does have limits. To date, these systems have been proven offshore only on wells with drytrees and without complex downhole hardware. Subsea engineering is rapidly moving to provide safe and certified optical passthrough